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Nature of Business and Summary of Significant Accounting Policies (Narrative) (Details) enterprise_customer in Millions, developer in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2017 USD ($) | May 31, 2017 USD ($) | Nov. 30, 2016 USD ($) | Aug. 31, 2016 USD ($) | Nov. 30, 2017 USD ($) enterprise_customer developer software_vendor | Nov. 30, 2016 USD ($) | Nov. 30, 2015 USD ($) | Feb. 28, 2017 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Number of independent software vendors, more than | software_vendor |  |  |  |  | 1,700 |  |  |
Number of enterprise customers, more than | enterprise_customer |  |  |  |  | 0.1 |  |  |
Number of developers, more than | developer |  |  |  |  | 2 |  |  |
Capitalized software development costs | $ 0 |  | $ 0 |  | $ 0 | $ 0 | $ 1,300,000 |
Amortization |  |  |  |  | 35,370,000 | 30,815,000 | 32,286,000 |
Impairment of goodwill and intangible assets |  |  |  |  | 0 | 92,000,000 | 0 |
Impairment of goodwill and long-lived assets |  |  |  |  | 762,000 |  | 4,962,000 |
Advertising costs |  |  |  |  | 1,500,000 | 2,900,000 | 2,500,000 |
Acquisition-related expenses |  |  |  |  | 1,458,000 | 1,240,000 | 4,239,000 |
Restructuring related costs |  |  |  |  | $ 22,210,000 | 1,692,000 | 12,989,000 |
Internal Use Software [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 3 years |  |  |
Amortization |  |  |  |  | $ 600,000 | $ 1,000,000 | 1,300,000 |
Impairment of software development costs |  | $ 1,500,000 | $ 1,000,000 |  |  |  |  |
Impairment of goodwill and long-lived assets |  |  |  |  |  |  | $ 5,000,000 |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  |  | 3 years | 3 years |  |
Minimum [Member] | Computer Equipment and Software [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 3 years |  |  |
Minimum [Member] | Buildings and Improvements [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 5 years |  |  |
Minimum [Member] | Furniture and Fixtures [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 5 years |  |  |
Minimum [Member] | Stock Options [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  |  | 4 years |  |  |
Maximum [Member] | Computer Equipment and Software [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 7 years |  |  |
Maximum [Member] | Buildings and Improvements [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 39 years |  |  |
Maximum [Member] | Furniture and Fixtures [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Useful lives of major asset |  |  |  |  | 7 years |  |  |
Maximum [Member] | Stock Options [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Stock-based compensation service period |  |  |  |  | 5 years |  |  |
Long-term Debt [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unamortized debt issuance costs reclassified from other assets to long-term debt |  |  |  |  |  |  |  | $ 1,000,000
Other Assets [Member] | New Accounting Pronouncement, Early Adoption, Effect [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unamortized debt issuance costs reclassified from other assets to long-term debt |  |  |  |  |  |  |  | $ (1,000,000)
Modulus [Member] | Purchased Technology [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Impairment of software development costs |  |  |  | $ 5,100,000 |  | $ 5,100,000 |  |
Application Development and Deployment [Member] |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Impairment of goodwill and intangible assets | $ 92,000,000 |  |  |  |  | $ 92,000,000 |  |

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